Steam Burns

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Emily Orozco L4
Posts: 45
Joined: Fri Sep 28, 2018 12:29 am

Steam Burns

Postby Emily Orozco L4 » Sun Jan 26, 2020 5:19 pm

Does anyone remember how Lavelle explained that steam causes more severe burns?

JamieVu_2C
Posts: 108
Joined: Thu Jul 25, 2019 12:16 am

Re: Steam Burns

Postby JamieVu_2C » Sun Jan 26, 2020 5:30 pm

Steam burns are more severe due to the enthalpy of vaporization. At 100 degrees Celsius, water changes from a liquid to gas, and additional energy is needed for the change. However, despite the additional energy, the temperature is the same at 100 degrees Celsius, so both liquid and gaseous water can exist at this temperature. Because they exist at the same temperature and steam requires more energy to be converted to the gaseous phase, steam burns are more severe.

Tracy Tolentino_2E
Posts: 140
Joined: Sat Sep 07, 2019 12:17 am

Re: Steam Burns

Postby Tracy Tolentino_2E » Sun Jan 26, 2020 5:33 pm

How is it that at 100C, both liquid and gas can exist at the same time? And why does steam require more energy to be converted?

Jesalynne 2F
Posts: 100
Joined: Wed Sep 18, 2019 12:18 am

Re: Steam Burns

Postby Jesalynne 2F » Sun Jan 26, 2020 5:41 pm

This helped explain it for me: http://scienceline.ucsb.edu/getkey.php?key=1322
More energy is released in a phase change from a gas to a liquid (steam would turn to liquid once it touches skin) compared to boiling water touching skin because it doesn't undergo a phase change (less energy released).
In class he used a heating curve for water to show this concept.
Image

Micah3J
Posts: 100
Joined: Tue Oct 08, 2019 12:16 am

Re: Steam Burns

Postby Micah3J » Sun Jan 26, 2020 6:00 pm

Steam burns are severe since all of H20 is changing states and thus transfers a lot of energy in the form of heat onto the skin

Vinita Saxena 2I
Posts: 58
Joined: Fri Aug 09, 2019 12:16 am

Re: Steam Burns

Postby Vinita Saxena 2I » Sun Jan 26, 2020 6:31 pm

When steam touches your skin it has to change state, so it releases a lot of energy into your skin. Water is already a liquid so there is no phase change, which means less heat is released

Shrayes Raman
Posts: 129
Joined: Sat Jul 20, 2019 12:15 am

Re: Steam Burns

Postby Shrayes Raman » Mon Jan 27, 2020 12:12 am

Steam undergo's a phase change thus releasing more energy while water liquid doesn't.

Brian J Cheng 1I
Posts: 115
Joined: Thu Jul 11, 2019 12:15 am

Re: Steam Burns

Postby Brian J Cheng 1I » Mon Jan 27, 2020 12:24 am

The energy change granted by the steam is higher (more energy is released) resulting in greater energy.

MAC 4G
Posts: 121
Joined: Wed Sep 18, 2019 12:16 am

Re: Steam Burns

Postby MAC 4G » Mon Jan 27, 2020 12:52 am

Steam has more phase changes than water, it releases more energy when it comes into contact with skin. It transfers more energy to your skin resulting in more damage. Here's a more detailed answer: viewtopic.php?t=1844

Mitchell Koss 4G
Posts: 128
Joined: Sat Jul 20, 2019 12:17 am

Re: Steam Burns

Postby Mitchell Koss 4G » Mon Jan 27, 2020 10:13 pm

The second flat line is longer than the first meaning more energy is involved for making steam from boiling water


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